contrib/bind-9.5.2/bin/named/lwaddr.c

   1 /*
   2  * Copyright (C) 2004, 2005, 2007, 2008  Internet Systems Consortium, Inc. ("ISC")
   3  * Copyright (C) 2000, 2001  Internet Software Consortium.
   4  *
   5  * Permission to use, copy, modify, and/or distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
  10  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  11  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
  12  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  13  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
  14  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  15  * PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 /* $Id: lwaddr.c,v 1.8.130.2 2008/01/11 23:46:27 tbox Exp $ */
  19
  20 /*! \file */
  21
  22 #include <config.h>
  23
  24 #include <string.h>
  25
  26 #include <isc/result.h>
  27 #include <isc/netaddr.h>
  28 #include <isc/sockaddr.h>
  29
  30 #include <lwres/lwres.h>
  31
  32 #include <named/lwaddr.h>
  33
  34 /*%
  35  * Convert addresses from lwres to isc format.
  36  */
  37 isc_result_t
  38 lwaddr_netaddr_fromlwresaddr(isc_netaddr_t *na, lwres_addr_t *la) {
  39         if (la->family != LWRES_ADDRTYPE_V4 && la->family != LWRES_ADDRTYPE_V6)
  40                 return (ISC_R_FAMILYNOSUPPORT);
  41
  42         if (la->family == LWRES_ADDRTYPE_V4) {
  43                 struct in_addr ina;
  44                 memcpy(&ina.s_addr, la->address, 4);
  45                 isc_netaddr_fromin(na, &ina);
  46         } else {
  47                 struct in6_addr ina6;
  48                 memcpy(&ina6.s6_addr, la->address, 16);
  49                 isc_netaddr_fromin6(na, &ina6);
  50         }
  51         return (ISC_R_SUCCESS);
  52 }
  53
  54 isc_result_t
  55 lwaddr_sockaddr_fromlwresaddr(isc_sockaddr_t *sa, lwres_addr_t *la,
  56                               in_port_t port)
  57 {
  58         isc_netaddr_t na;
  59         isc_result_t result;
  60
  61         result = lwaddr_netaddr_fromlwresaddr(&na, la);
  62         if (result != ISC_R_SUCCESS)
  63                 return (result);
  64         isc_sockaddr_fromnetaddr(sa, &na, port);
  65         return (ISC_R_SUCCESS);
  66 }
  67
  68 /*%
  69  * Convert addresses from isc to lwres format.
  70  */
  71
  72 isc_result_t
  73 lwaddr_lwresaddr_fromnetaddr(lwres_addr_t *la, isc_netaddr_t *na) {
  74         if (na->family != AF_INET && na->family != AF_INET6)
  75                 return (ISC_R_FAMILYNOSUPPORT);
  76
  77         if (na->family == AF_INET) {
  78                 la->family = LWRES_ADDRTYPE_V4;
  79                 la->length = 4;
  80                 memcpy(la->address, &na->type.in, 4);
  81         } else {
  82                 la->family = LWRES_ADDRTYPE_V6;
  83                 la->length = 16;
  84                 memcpy(la->address, &na->type.in6, 16);
  85         }
  86         return (ISC_R_SUCCESS);
  87 }
  88
  89 isc_result_t
  90 lwaddr_lwresaddr_fromsockaddr(lwres_addr_t *la, isc_sockaddr_t *sa) {
  91         isc_netaddr_t na;
  92         isc_netaddr_fromsockaddr(&na, sa);
  93         return (lwaddr_lwresaddr_fromnetaddr(la, &na));
  94 }